Collision management

ABSTRACT

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a set of indicators indicating that a first transmission is scheduled for concurrent transmission with a second transmission, wherein the user equipment is not configured to transmit the first transmission and the second transmission concurrently. The user equipment may select one of the first transmission or the second transmission for transmission based at least in part on a characteristic of at least one of the first transmission or the second transmission identified using the set of indicators. The user equipment may transmit the selected one of the first transmission or the second transmission based at least in part on selecting the one of the first transmission or the second transmission. Numerous other aspects are provided.

CROSS-REFERENCE TO RELATED APPLICATIONS UNDER 35 U.S.C. § 119

This application claims priority to U.S. Provisional Patent ApplicationNo. 62/687,609, filed on Jun. 20, 2018, entitled “TECHNIQUES ANDAPPARATUSES FOR COLLISION MANAGEMENT,” which is hereby expresslyincorporated by reference herein.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wirelesscommunication, and more particularly to techniques and apparatuses forcollision management.

BACKGROUND

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources (e.g., bandwidth,transmit power, and/or the like). Examples of such multiple-accesstechnologies include code division multiple access (CDMA) systems, timedivision multiple access (TDMA) systems, frequency-division multipleaccess (FDMA) systems, orthogonal frequency-division multiple access(OFDMA) systems, single-carrier frequency-division multiple access(SC-FDMA) systems, time division synchronous code division multipleaccess (TD-SCDMA) systems, and Long Term Evolution (LTE).LTE/LTE-Advanced is a set of enhancements to the Universal MobileTelecommunications System (UMTS) mobile standard promulgated by theThird Generation Partnership Project (3GPP).

A wireless communication network may include a number of base stations(BSs) that can support communication for a number of user equipment(UEs). A user equipment (UE) may communicate with a base station (BS)via the downlink and uplink. The downlink (or forward link) refers tothe communication link from the BS to the UE, and the uplink (or reverselink) refers to the communication link from the UE to the BS. As will bedescribed in more detail herein, a BS may be referred to as a Node B, agNB, an access point (AP), a radio head, a transmit receive point (TRP),a New Radio (NR) BS, a 5G Node B, and/or the like.

The above multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent user equipment to communicate on a municipal, national,regional, and even global level. New Radio (NR), which may also bereferred to as 5G, is a set of enhancements to the LTE mobile standardpromulgated by the Third Generation Partnership Project (3GPP). NR isdesigned to better support mobile broadband Internet access by improvingspectral efficiency, lowering costs, improving services, making use ofnew spectrum, and better integrating with other open standards usingorthogonal frequency division multiplexing (OFDM) with a cyclic prefix(CP) (CP-OFDM) on the downlink (DL), using CP-OFDM and/or SC-FDM (e.g.,also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) onthe uplink (UL), as well as supporting beamforming, multiple-inputmultiple-output (MIMO) antenna technology, and carrier aggregation.However, as the demand for mobile broadband access continues toincrease, there exists a need for further improvements in LTE and NRtechnologies. Preferably, these improvements should be applicable toother multiple access technologies and the telecommunication standardsthat employ these technologies.

SUMMARY

In some aspects, a method of wireless communication, performed by a userequipment (UE), may include receiving a set of indicators indicatingthat a first transmission is scheduled for concurrent transmission witha second transmission, wherein the UE is not configured to transmit thefirst transmission and the second transmission concurrently. The methodmay include selecting one of the first transmission or the secondtransmission for transmission based at least in part on a characteristicof at least one of the first transmission or the second transmissionidentified using the set of indicators. The method may includetransmitting the selected one of the first transmission or the secondtransmission based at least in part on selecting the one of the firsttransmission or the second transmission.

In some aspects, a user equipment for wireless communication may includememory and one or more processors operatively coupled to the memory. Thememory and the one or more processors may be configured to receive a setof indicators indicating that a first transmission is scheduled forconcurrent transmission with a second transmission, wherein the userequipment is not configured to transmit the first transmission and thesecond transmission concurrently. The memory and the one or moreprocessors may be configured to select one of the first transmission orthe second transmission for transmission based at least in part on acharacteristic of at least one of the first transmission or the secondtransmission identified using the set of indicators. The memory and theone or more processors may be configured to transmit the selected one ofthe first transmission or the second transmission based at least in parton selecting the one of the first transmission or the secondtransmission.

In some aspects, a non-transitory computer-readable medium may store oneor more instructions for wireless communication. The one or moreinstructions, when executed by one or more processors of a userequipment, may cause the one or more processors to receive a set ofindicators indicating that a first transmission is scheduled forconcurrent transmission with a second transmission, wherein the userequipment is not configured to transmit the first transmission and thesecond transmission concurrently. The one or more instructions, whenexecuted by the one or more processors of the user equipment, may causethe one or more processors to select one of the first transmission orthe second transmission for transmission based at least in part on acharacteristic of at least one of the first transmission or the secondtransmission identified using the set of indicators. The one or moreinstructions, when executed by the one or more processors of the userequipment, may cause the one or more processors to transmit the selectedone of the first transmission or the second transmission based at leastin part on selecting the one of the first transmission or the secondtransmission.

In some aspects, an apparatus for wireless communication may includemeans for receiving a set of indicators indicating that a firsttransmission is scheduled for concurrent transmission with a secondtransmission, wherein the apparatus is not configured to transmit thefirst transmission and the second transmission concurrently. Theapparatus may include means for selecting one of the first transmissionor the second transmission for transmission based at least in part on acharacteristic of at least one of the first transmission or the secondtransmission identified using the set of indicators. The apparatus mayinclude means for transmitting the selected one of the firsttransmission or the second transmission based at least in part onselecting the one of the first transmission or the second transmission.

Aspects generally include a method, device, apparatus, computer programproduct, non-transitory computer-readable medium, user equipment, basestation, wireless communication device, and processing system assubstantially described herein with reference to and as illustrated bythe accompanying drawings and specification.

The foregoing has outlined rather broadly the features and technicaladvantages of examples according to the disclosure in order that thedetailed description that follows may be better understood. Additionalfeatures and advantages will be described hereinafter. The conceptionand specific examples disclosed may be readily utilized as a basis formodifying or designing other structures for carrying out the samepurposes of the present disclosure. Such equivalent constructions do notdepart from the scope of the appended claims. Characteristics of theconcepts disclosed herein, both their organization and method ofoperation, together with associated advantages will be better understoodfrom the following description when considered in connection with theaccompanying figures. Each of the figures is provided for the purposesof illustration and description, and not as a definition of the limitsof the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can beunderstood in detail, a more particular description, briefly summarizedabove, may be had by reference to aspects, some of which are illustratedin the appended drawings. It is to be noted, however, that the appendeddrawings illustrate only certain typical aspects of this disclosure andare therefore not to be considered limiting of its scope, for thedescription may admit to other equally effective aspects. The samereference numbers in different drawings may identify the same or similarelements.

FIG. 1 is a block diagram conceptually illustrating an example of awireless communication network, in accordance with various aspects ofthe present disclosure.

FIG. 2 is a block diagram conceptually illustrating an example of a basestation in communication with a user equipment (UE) in a wirelesscommunication network, in accordance with various aspects of the presentdisclosure.

FIG. 3A is a block diagram conceptually illustrating an example of aframe structure in a wireless communication network, in accordance withvarious aspects of the present disclosure.

FIG. 3B is a block diagram conceptually illustrating an examplesynchronization communication hierarchy in a wireless communicationnetwork, in accordance with various aspects of the present disclosure.

FIG. 4 is a block diagram conceptually illustrating an example slotformat with a normal cyclic prefix, in accordance with various aspectsof the present disclosure.

FIG. 5 illustrates an example logical architecture of a distributedradio access network (RAN), in accordance with various aspects of thepresent disclosure.

FIG. 6 illustrates an example physical architecture of a distributedRAN, in accordance with various aspects of the present disclosure.

FIG. 7 is a diagram illustrating an example of collision management, inaccordance with various aspects of the present disclosure.

FIG. 8 is a diagram illustrating an example process performed, forexample, by a user equipment, in accordance with various aspects of thepresent disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafterwith reference to the accompanying drawings. This disclosure may,however, be embodied in many different forms and should not be construedas limited to any specific structure or function presented throughoutthis disclosure. Rather, these aspects are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the disclosure to those skilled in the art. Based at least inpart on the teachings herein one skilled in the art should appreciatethat the scope of the disclosure is intended to cover any aspect of thedisclosure disclosed herein, whether implemented independently of orcombined with any other aspect of the disclosure. For example, anapparatus may be implemented or a method may be practiced using anynumber of the aspects set forth herein. In addition, the scope of thedisclosure is intended to cover such an apparatus or method which ispracticed using other structure, functionality, or structure andfunctionality in addition to or other than the various aspects of thedisclosure set forth herein. It should be understood that any aspect ofthe disclosure disclosed herein may be embodied by one or more elementsof a claim.

Several aspects of telecommunication systems will now be presented withreference to various apparatuses and techniques. These apparatuses andtechniques will be described in the following detailed description andillustrated in the accompanying drawings by various blocks, modules,components, circuits, steps, processes, algorithms, and/or the like(collectively referred to as “elements”). These elements may beimplemented using hardware, software, or combinations thereof. Whethersuch elements are implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem.

It should be noted that while aspects may be described herein usingterminology commonly associated with 3G and/or 4G wireless technologies,aspects of the present disclosure can be applied in othergeneration-based communication systems, such as 5G and later, includingNR technologies.

FIG. 1 is a diagram illustrating a network 100 in which aspects of thepresent disclosure may be practiced. The network 100 may be an LTEnetwork or some other wireless network, such as a 5G or NR network.Wireless network 100 may include a number of BSs 110 (shown as BS 110 a,BS 110 b, BS 110 c, and BS 110 d) and other network entities. A BS is anentity that communicates with user equipment (UEs) and may also bereferred to as a base station, a NR BS, a Node B, a gNB, a 5G node B(NB), an access point, a transmit receive point (TRP), and/or the like.Each BS may provide communication coverage for a particular geographicarea. In 3GPP, the term “cell” can refer to a coverage area of a BSand/or a BS subsystem serving this coverage area, depending on thecontext in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, afemto cell, and/or another type of cell. A macro cell may cover arelatively large geographic area (e.g., several kilometers in radius)and may allow unrestricted access by UEs with service subscription. Apico cell may cover a relatively small geographic area and may allowunrestricted access by UEs with service subscription. A femto cell maycover a relatively small geographic area (e.g., a home) and may allowrestricted access by UEs having association with the femto cell (e.g.,UEs in a closed subscriber group (CSG)). ABS for a macro cell may bereferred to as a macro BS. ABS for a pico cell may be referred to as apico BS. A BS for a femto cell may be referred to as a femto BS or ahome BS. In the example shown in FIG. 1, a BS 110 a may be a macro BSfor a macro cell 102 a, a BS 110 b may be a pico BS for a pico cell 102b, and a BS 110 c may be a femto BS for a femto cell 102 c. A BS maysupport one or multiple (e.g., three) cells. The terms “eNB”, “basestation”, “NR BS”, “gNB”, “TRP”, “AP”, “node B”, “5G NB”, and “cell” maybe used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and thegeographic area of the cell may move according to the location of amobile BS. In some aspects, the BSs may be interconnected to one anotherand/or to one or more other BSs or network nodes (not shown) in theaccess network 100 through various types of backhaul interfaces such asa direct physical connection, a virtual network, and/or the like usingany suitable transport network.

Wireless network 100 may also include relay stations. A relay station isan entity that can receive a transmission of data from an upstreamstation (e.g., a BS or a UE) and send a transmission of the data to adownstream station (e.g., a UE or a BS). A relay station may also be aUE that can relay transmissions for other UEs. In the example shown inFIG. 1, a relay station 110 d may communicate with macro BS 110 a and aUE 120 d in order to facilitate communication between BS 110 a and UE120 d. A relay station may also be referred to as a relay BS, a relaybase station, a relay, and/or the like.

Wireless network 100 may be a heterogeneous network that includes BSs ofdifferent types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/orthe like. These different types of BSs may have different transmit powerlevels, different coverage areas, and different impacts on interferencein wireless network 100. For example, macro BSs may have a high transmitpower level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relayBSs may have lower transmit power levels (e.g., 0.1 to 2 Watts).

A network controller 130 may couple to a set of BSs and may providecoordination and control for these BSs. Network controller 130 maycommunicate with the BSs via a backhaul. The BSs may also communicatewith one another, e.g., directly or indirectly via a wireless orwireline backhaul.

UEs 120 (e.g., 120 a, 120 b, 120 c) may be dispersed throughout wirelessnetwork 100, and each UE may be stationary or mobile. A UE may also bereferred to as an access terminal, a terminal, a mobile station, asubscriber unit, a station, and/or the like. A UE may be a cellularphone (e.g., a smart phone), a personal digital assistant (PDA), awireless modem, a wireless communication device, a handheld device, alaptop computer, a cordless phone, a wireless local loop (WLL) station,a tablet, a camera, a gaming device, a netbook, a smartbook, anultrabook, a medical device or equipment, biometric sensors/devices,wearable devices (smart watches, smart clothing, smart glasses, smartwrist bands, smart jewelry (e.g., smart ring, smart bracelet)), anentertainment device (e.g., a music or video device, or a satelliteradio), a vehicular component or sensor, smart meters/sensors,industrial manufacturing equipment, a global positioning system device,or any other suitable device that is configured to communicate via awireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolvedor enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEsinclude, for example, robots, drones, remote devices, sensors, meters,monitors, location tags, and/or the like, that may communicate with abase station, another device (e.g., remote device), or some otherentity. A wireless node may provide, for example, connectivity for or toa network (e.g., a wide area network such as Internet or a cellularnetwork) via a wired or wireless communication link. Some UEs may beconsidered Internet-of-Things (IoT) devices, and/or may be implementedas NB-IoT (narrowband internet of things) devices. Some UEs may beconsidered a Customer Premises Equipment (CPE). UE 120 may be includedinside a housing that houses components of UE 120, such as processorcomponents, memory components, and/or the like.

In general, any number of wireless networks may be deployed in a givengeographic area. Each wireless network may support a particular RAT andmay operate on one or more frequencies. A RAT may also be referred to asa radio technology, an air interface, and/or the like. A frequency mayalso be referred to as a carrier, a frequency channel, and/or the like.Each frequency may support a single RAT in a given geographic area inorder to avoid interference between wireless networks of different RATs.In some cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120 a and UE 120e) may communicate directly using one or more sidelink channels (e.g.,without using a base station 110 as an intermediary to communicate withone another). For example, the UEs 120 may communicate usingpeer-to-peer (P2P) communications, device-to-device (D2D)communications, a vehicle-to-everything (V2X) protocol (e.g., which mayinclude a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure(V2I) protocol, and/or the like), a mesh network, and/or the like. Inthis case, the UE 120 may perform scheduling operations, resourceselection operations, and/or other operations described elsewhere hereinas being performed by the base station 110.

As indicated above, FIG. 1 is provided merely as an example. Otherexamples may differ from what is described with regard to FIG. 1.

FIG. 2 shows a block diagram of a design 200 of base station 110 and UE120, which may be one of the base stations and one of the UEs in FIG. 1.Base station 110 may be equipped with T antennas 234 a through 234 t,and UE 120 may be equipped with R antennas 252 a through 252 r, where ingeneral T≥1 and R≥1.

At base station 110, a transmit processor 220 may receive data from adata source 212 for one or more UEs, select one or more modulation andcoding schemes (MCS) for each UE based at least in part on channelquality indicators (CQIs) received from the UE, process (e.g., encodeand modulate) the data for each UE based at least in part on the MCSselected for the UE, and provide data symbols for all UEs. Transmitprocessor 220 may also process system information (e.g., for semi-staticresource partitioning information (SRPI) and/or the like) and controlinformation (e.g., CQI requests, grants, upper layer signaling, and/orthe like) and provide overhead symbols and control symbols. Transmitprocessor 220 may also generate reference symbols for reference signals(e.g., the cell-specific reference signal (CRS)) and synchronizationsignals (e.g., the primary synchronization signal (PSS) and secondarysynchronization signal (SSS)). A transmit (TX) multiple-inputmultiple-output (MIMO) processor 230 may perform spatial processing(e.g., precoding) on the data symbols, the control symbols, the overheadsymbols, and/or the reference symbols, if applicable, and may provide Toutput symbol streams to T modulators (MODs) 232 a through 232 t. Eachmodulator 232 may process a respective output symbol stream (e.g., forOFDM and/or the like) to obtain an output sample stream. Each modulator232 may further process (e.g., convert to analog, amplify, filter, andupconvert) the output sample stream to obtain a downlink signal. Tdownlink signals from modulators 232 a through 232 t may be transmittedvia T antennas 234 a through 234 t, respectively. According to variousaspects described in more detail below, the synchronization signals canbe generated with location encoding to convey additional information.

At UE 120, antennas 252 a through 252 r may receive the downlink signalsfrom base station 110 and/or other base stations and may providereceived signals to demodulators (DEMODs) 254 a through 254 r,respectively. Each demodulator 254 may condition (e.g., filter, amplify,downconvert, and digitize) a received signal to obtain input samples.Each demodulator 254 may further process the input samples (e.g., forOFDM and/or the like) to obtain received symbols. A MIMO detector 256may obtain received symbols from all R demodulators 254 a through 254 r,perform MIMO detection on the received symbols if applicable, andprovide detected symbols. A receive processor 258 may process (e.g.,demodulate and decode) the detected symbols, provide decoded data for UE120 to a data sink 260, and provide decoded control information andsystem information to a controller/processor 280. A channel processormay determine reference signal received power (RSRP), received signalstrength indicator (RSSI), reference signal received quality (RSRQ),channel quality indicator (CQI), and/or the like. In some aspects, oneor more components of UE 120 may be included in a housing.

On the uplink, at UE 120, a transmit processor 264 may receive andprocess data from a data source 262 and control information (e.g., forreports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) fromcontroller/processor 280. Transmit processor 264 may also generatereference symbols for one or more reference signals. The symbols fromtransmit processor 264 may be precoded by a TX MIMO processor 266 ifapplicable, further processed by modulators 254 a through 254 r (e.g.,for DFT-s-OFDM, CP-OFDM, and/or the like), and transmitted to basestation 110. At base station 110, the uplink signals from UE 120 andother UEs may be received by antennas 234, processed by demodulators232, detected by a MIMO detector 236 if applicable, and furtherprocessed by a receive processor 238 to obtain decoded data and controlinformation sent by UE 120. Receive processor 238 may provide thedecoded data to a data sink 239 and the decoded control information tocontroller/processor 240. Base station 110 may include communicationunit 244 and communicate to network controller 130 via communicationunit 244. Network controller 130 may include communication unit 294,controller/processor 290, and memory 292.

Controller/processor 240 of base station 110, controller/processor 280of UE 120, and/or any other component(s) of FIG. 2 may perform one ormore techniques associated with collision management, as described inmore detail elsewhere herein. For example, controller/processor 240 ofbase station 110, controller/processor 280 of UE 120, and/or any othercomponent(s) of FIG. 2 may perform or direct operations of, for example,process 800 of FIG. 8 and/or other processes as described herein.Memories 242 and 282 may store data and program codes for base station110 and UE 120, respectively. A scheduler 246 may schedule UEs for datatransmission on the downlink and/or uplink.

In some aspects, UE 120 may include means for receiving a set ofindicators indicating that a first transmission is scheduled forconcurrent transmission with a second transmission, wherein UE 120 isnot configured to transmit the first transmission and the secondtransmission concurrently; means for selecting one of the firsttransmission or the second transmission for transmission based at leastin part on a characteristic of at least one of the first transmission orthe second transmission identified using the set of indicators; meansfor transmitting the selected one of the first transmission or thesecond transmission based at least in part on selecting the one of thefirst transmission or the second transmission; and/or the like. In someaspects, such means may include one or more components of UE 120described in connection with FIG. 2.

As indicated above, FIG. 2 is provided merely as an example. Otherexamples may differ from what is described with regard to FIG. 2.

FIG. 3A shows an example frame structure 300 for FDD in atelecommunications system (e.g., NR). The transmission timeline for eachof the downlink and uplink may be partitioned into units of radio frames(sometimes referred to as frames). Each radio frame may have apredetermined duration (e.g., 10 milliseconds (ms)) and may bepartitioned into a set of Z (Z≥1) subframes (e.g., with indices of 0through Z-1). Each subframe may have a predetermined duration (e.g., 1ms) and may include a set of slots (e.g., 2 m slots per subframe areshown in FIG. 3A, where m is a numerology used for a transmission, suchas 0, 1,2, 3, 4, and/or the like). Each slot may include a set of Lsymbol periods. For example, each slot may include fourteen symbolperiods (e.g., as shown in FIG. 3A), seven symbol periods, or anothernumber of symbol periods. In a case where the subframe includes twoslots (e.g., when m=1), the subframe may include 2L symbol periods,where the 2L symbol periods in each subframe may be assigned indices of0 through 2L-1. In some aspects, a scheduling unit for the FDD mayframe-based, subframe-based, slot-based, symbol-based, and/or the like.

While some techniques are described herein in connection with frames,subframes, slots, and/or the like, these techniques may equally apply toother types of wireless communication structures, which may be referredto using terms other than “frame,” “subframe,” “slot,” and/or the likein 5G NR. In some aspects, a wireless communication structure may referto a periodic time-bounded communication unit defined by a wirelesscommunication standard and/or protocol. Additionally, or alternatively,different configurations of wireless communication structures than thoseshown in FIG. 3A may be used.

In certain telecommunications (e.g., NR), a base station may transmitsynchronization signals. For example, a base station may transmit aprimary synchronization signal (PSS), a secondary synchronization signal(SSS), and/or the like, on the downlink for each cell supported by thebase station. The PSS and SSS may be used by UEs for cell search andacquisition. For example, the PSS may be used by UEs to determine symboltiming, and the SSS may be used by UEs to determine a physical cellidentifier, associated with the base station, and frame timing. The basestation may also transmit a physical broadcast channel (PBCH). The PBCHmay carry some system information, such as system information thatsupports initial access by UEs.

In some aspects, the base station may transmit the PSS, the SSS, and/orthe PBCH in accordance with a synchronization communication hierarchy(e.g., a synchronization signal (SS) hierarchy) including multiplesynchronization communications (e.g., SS blocks), as described below inconnection with FIG. 3B.

FIG. 3B is a block diagram conceptually illustrating an example SShierarchy, which is an example of a synchronization communicationhierarchy. As shown in FIG. 3B, the SS hierarchy may include an SS burstset, which may include a plurality of SS bursts (identified as SS burst0 through SS burst B-1, where B is a maximum number of repetitions ofthe SS burst that may be transmitted by the base station). As furthershown, each SS burst may include one or more SS blocks (identified as SSblock 0 through SS block (b_(max_SS-1)), where b_(max_SS-1) is a maximumnumber of SS blocks that can be carried by an SS burst). In someaspects, different SS blocks may be beam-formed differently. An SS burstset may be periodically transmitted by a wireless node, such as every Xmilliseconds, as shown in FIG. 3B. In some aspects, an SS burst set mayhave a fixed or dynamic length, shown as Y milliseconds in FIG. 3B.

The SS burst set shown in FIG. 3B is an example of a synchronizationcommunication set, and other synchronization communication sets may beused in connection with the techniques described herein. Furthermore,the SS block shown in FIG. 3B is an example of a synchronizationcommunication, and other synchronization communications may be used inconnection with the techniques described herein.

In some aspects, an SS block includes resources that carry the PSS, theSSS, the PBCH, and/or other synchronization signals (e.g., a tertiarysynchronization signal (TSS)) and/or synchronization channels. In someaspects, multiple SS blocks are included in an SS burst, and the PSS,the SSS, and/or the PBCH may be the same across each SS block of the SSburst. In some aspects, a single SS block may be included in an SSburst. In some aspects, the SS block may be at least four symbol periodsin length, where each symbol carries one or more of the PSS (e.g.,occupying one symbol), the SSS (e.g., occupying one symbol), and/or thePBCH (e.g., occupying two symbols).

In some aspects, the symbols of an SS block are consecutive, as shown inFIG. 3B. In some aspects, the symbols of an SS block arenon-consecutive. Similarly, in some aspects, one or more SS blocks ofthe SS burst may be transmitted in consecutive radio resources (e.g.,consecutive symbol periods) during one or more slots. Additionally, oralternatively, one or more SS blocks of the SS burst may be transmittedin non-consecutive radio resources.

In some aspects, the SS bursts may have a burst period, whereby the SSblocks of the SS burst are transmitted by the base station according tothe burst period. In other words, the SS blocks may be repeated duringeach SS burst. In some aspects, the SS burst set may have a burst setperiodicity, whereby the SS bursts of the SS burst set are transmittedby the base station according to the fixed burst set periodicity. Inother words, the SS bursts may be repeated during each SS burst set.

The base station may transmit system information, such as systeminformation blocks (SIBs) on a physical downlink shared channel (PDSCH)in certain slots. The base station may transmit control information/dataon a physical downlink control channel (PDCCH) in C symbol periods of aslot, where B may be configurable for each slot. The base station maytransmit traffic data and/or other data on the PDSCH in the remainingsymbol periods of each slot.

As indicated above, FIGS. 3A and 3B are provided as examples. Otherexamples may differ from what is described with regard to FIGS. 3A and3B.

FIG. 4 shows an example slot format 410 with a normal cyclic prefix. Theavailable time frequency resources may be partitioned into resourceblocks. Each resource block may cover a set of subcarriers (e.g., 12subcarriers) in one slot and may include a number of resource elements.Each resource element may cover one subcarrier in one symbol period(e.g., in time) and may be used to send one modulation symbol, which maybe a real or complex value.

An interlace structure may be used for each of the downlink and uplinkfor FDD in certain telecommunications systems (e.g., NR). For example, Qinterlaces with indices of 0 through Q-1 may be defined, where Q may beequal to 4, 6, 8, 10, or some other value. Each interlace may includeslots that are spaced apart by Q frames. In particular, interlace q mayinclude slots q, q+Q, q+2Q, etc., where q ∈ {0, . . . , Q-1}.

A UE may be located within the coverage of multiple BSs. One of theseBSs may be selected to serve the UE. The serving BS may be selectedbased at least in part on various criteria such as received signalstrength, received signal quality, path loss, and/or the like. Receivedsignal quality may be quantified by a signal-to-noise-and-interferenceratio (SNIR), or a reference signal received quality (RSRQ), or someother metric. The UE may operate in a dominant interference scenario inwhich the UE may observe high interference from one or more interferingBSs.

While aspects of the examples described herein may be associated with NRor 5G technologies, aspects of the present disclosure may be applicablewith other wireless communication systems. New Radio (NR) may refer toradios configured to operate according to a new air interface (e.g.,other than Orthogonal Frequency Divisional Multiple Access (OFDMA)-basedair interfaces) or fixed transport layer (e.g., other than InternetProtocol (IP)). In aspects, NR may utilize OFDM with a CP (hereinreferred to as cyclic prefix OFDM or CP-OFDM) and/or SC-FDM on theuplink, may utilize CP-OFDM on the downlink and include support forhalf-duplex operation using TDD. In aspects, NR may, for example,utilize OFDM with a CP (herein referred to as CP-OFDM) and/or discreteFourier transform spread orthogonal frequency-division multiplexing(DFT-s-OFDM) on the uplink, may utilize CP-OFDM on the downlink andinclude support for half-duplex operation using TDD. NR may includeEnhanced Mobile Broadband (eMBB) service targeting wide bandwidth (e.g.,80 megahertz (MHz) and beyond), millimeter wave (mmW) targeting highcarrier frequency (e.g., 60 gigahertz (GHz)), massive MTC (mMTC)targeting non-backward compatible MTC techniques, and/or missioncritical targeting ultra reliable low latency communications (URLLC)service.

In some aspects, a single component carrier bandwidth of 100 MHz may besupported. NR resource blocks may span 12 sub-carriers with asub-carrier bandwidth of 60 or 120 kilohertz (kHz) over a 0.1millisecond (ms) duration. Each radio frame may include 40 slots and mayhave a length of 10 ms. Consequently, each slot may have a length of0.25 ms. Each slot may indicate a link direction (e.g., DL or UL) fordata transmission and the link direction for each slot may bedynamically switched. Each slot may include DL/UL data as well as DL/ULcontrol data.

Beamforming may be supported and beam direction may be dynamicallyconfigured. MIMO transmissions with precoding may also be supported.MIMO configurations in the DL may support up to 8 transmit antennas withmulti-layer DL transmissions up to 8 streams and up to 2 streams per UE.Multi-layer transmissions with up to 2 streams per UE may be supported.Aggregation of multiple cells may be supported with up to 8 servingcells. Alternatively, NR may support a different air interface, otherthan an OFDM-based interface. NR networks may include entities suchcentral units or distributed units.

As indicated above, FIG. 4 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 4.

FIG. 5 illustrates an example logical architecture of a distributed RAN500, according to aspects of the present disclosure. A 5G access node506 may include an access node controller (ANC) 502. The ANC may be acentral unit (CU) of the distributed RAN 500. The backhaul interface tothe next generation core network (NG-CN) 504 may terminate at the ANC.The backhaul interface to neighboring next generation access nodes(NG-ANs) may terminate at the ANC. The ANC may include one or more TRPs508 (which may also be referred to as BSs, NR BSs, Node Bs, 5G NBs, APs,gNB, or some other term). As described above, a TRP may be usedinterchangeably with “cell.”

The TRPs 508 may be a distributed unit (DU). The TRPs may be connectedto one ANC (ANC 502) or more than one ANC (not illustrated). Forexample, for RAN sharing, radio as a service (RaaS), and servicespecific AND deployments, the TRP may be connected to more than one ANC.A TRP may include one or more antenna ports. The TRPs may be configuredto individually (e.g., dynamic selection) or jointly (e.g., jointtransmission) serve traffic to a UE.

The local architecture of RAN 500 may be used to illustrate fronthauldefinition. The architecture may be defined that support fronthaulingsolutions across different deployment types. For example, thearchitecture may be based at least in part on transmit networkcapabilities (e.g., bandwidth, latency, and/or jitter).

The architecture may share features and/or components with LTE.According to aspects, the next generation AN (NG-AN) 510 may supportdual connectivity with NR. The NG-AN may share a common fronthaul forLTE and NR.

The architecture may enable cooperation between and among TRPs 508. Forexample, cooperation may be preset within a TRP and/or across TRPs viathe ANC 502. According to aspects, no inter-TRP interface may beneeded/present.

According to aspects, a dynamic configuration of split logical functionsmay be present within the architecture of RAN 500. The packet dataconvergence protocol (PDCP), radio link control (RLC), media accesscontrol (MAC) protocol may be adaptably placed at the ANC or TRP.

According to various aspects, a BS may include a central unit (CU)(e.g., ANC 502) and/or one or more distributed units (e.g., one or moreTRPs 508).

As indicated above, FIG. 5 is provided merely as an example. Otherexamples may differ from what is described with regard to FIG. 5.

FIG. 6 illustrates an example physical architecture of a distributed RAN600, according to aspects of the present disclosure. A centralized corenetwork unit (C-CU) 602 may host core network functions. The C-CU may becentrally deployed. C-CU functionality may be offloaded (e.g., toadvanced wireless services (AWS)), in an effort to handle peak capacity.

A centralized RAN unit (C-RU) 604 may host one or more ANC functions.Optionally, the C-RU may host core network functions locally. The C-RUmay have distributed deployment. The C-RU may be closer to the networkedge.

A distributed unit (DU) 606 may host one or more TRPs. The DU may belocated at edges of the network with radio frequency (RF) functionality.

As indicated above, FIG. 6 is provided merely as an example. Otherexamples may differ from what is described with regard to FIG. 6.

In some communications systems, such as NR or 5G, a UE may receiveindicators for a plurality of types of transmissions. For example, a UEmay periodically receive preconfigured uplink grants to indicate andschedule uplink transmission of an ultra-reliable low latencycommunication (URLLC) service, an enhanced mobile broadband (eMBB)service, and/or the like. URLLC service may be associated with arelatively short periodicity, which may result in a transmissionopportunity for transmitting data traffic associated with the URLLCservice being scheduled when there is no data traffic for transmission.Some modulation and coding schemes (MCSs) deployed for somecommunications systems enable high-reliability services, such as URLLCservice, by ensuring less than a threshold error rate for transmissions.

A BS may scramble an uplink grant using a radio network temporaryidentifier (RNTI), and the UE may descramble the uplink grant based atleast in part on the RNTI. Based at least in part on using differentRNTIs to scramble uplink grants, the BS may signal a type of MCS thatthe UE is to use for transmission using an uplink grant. For example,the UE may descramble a first uplink grant using a first RNTI and maydetermine that a first MCS is to be used for the first uplink grant, andmay descramble a second uplink grant using a second RNTI and maydetermine that a second MCS is to be used for the second uplink grant.In this case, the UE may transmit data associated with a URLLC serviceusing the first uplink grant based at least in part on the first MCSsatisfying one or more criteria (e.g., reliability criteria) for theURLLC service, and may transmit data associated with an eMBB serviceusing the second uplink grant based at least in part on the second MCSnot satisfying the one or more criteria for the URLLC service. In thisway, UE may use RNTI scrambling to identify characteristics of atransmission that is to be provided.

After a BS has transmitted a preconfigured uplink grant for apreconfigured uplink grant based transmission, to a UE for the UE to useat a subsequent time, the BS may determine to transmit a dynamic uplinkgrant for a grant-based transmission. For example, the BS may transmit apreconfigured uplink grant scrambled to indicate use of thepreconfigured uplink grant for a URLLC service, and may determine thatdata traffic associated with the URLLC service is relatively unlikely tobe generated for transmission by the UE at a time for which thepreconfigured uplink grant is scheduled. In this case, the BS maytransmit a dynamic uplink grant for the same time as the preconfigureduplink grant, and may scramble the dynamic uplink grant to indicate useof the dynamic uplink grant for data traffic associated with an eMBBservice, which the BS may determine is relatively likely to have beengenerated for transmission. The UE may transmit the data trafficassociated with the eMBB service, thereby avoiding a transmissionopportunity being wasted by a lack of data traffic associated with theURLLC service.

However, in some cases, the BS may transmit a dynamic uplink grant basedat least in part on determining that a transmission opportunityassociated with a preconfigured uplink grant may be wasted, but the UEmay have data traffic associated with the preconfigured uplink grant fortransmission. In this case, the UE may determine that the UE is notconfigured to transmit using the preconfigured uplink grant and thedynamic uplink grant concurrently, and may transmit using the dynamicuplink grant rather than the preconfigured uplink grant. However,prioritizing data traffic associated with the dynamic uplink grantrather than data traffic associated with the preconfigured uplink grantmay result in the UE failing to satisfy one or more requirements for aparticular service. For example, the UE may impose an excessive delay onURLLC traffic by prioritizing eMBB traffic. Similarly, the UE mayreceive indicators to schedule a plurality of concurrent dynamic uplinkgrant transmissions, a concurrent dynamic uplink grant transmission anda scheduling request transmission, a concurrent preconfigured uplinkgrant transmission and a scheduling request transmission, a plurality ofconcurrent scheduling request transmissions, and/or the like.

Some aspects described herein may enable collision management. Forexample, the UE may select a first transmission or a second transmissionbased at least in part on a characteristic of first transmission or thesecond transmission, such as a characteristic of data traffic fortransmission, a characteristic of an MCS that is to be used fortransmission, a characteristic of indicators used to signal the firsttransmission or the second transmission, and/or the like. In this way,the UE may satisfy one or more requirements of one or more servicesprovided by the UE, thereby improving network performance and/or networkmanagement relative to other techniques for collision management.

FIG. 7 is a diagram illustrating an example 700 of collision management,in accordance with various aspects of the present disclosure. As shownin FIG. 7, example 700 includes a BS 110 and a UE 120.

As further shown in FIG. 7, and by reference number 710, UE 120 mayreceive a first transmission indicator indicating a first transmission.For example, UE 120 may receive a preconfigured uplink grant scrambledusing a first RNTI, which may indicate that UE 120 is to transmit datatraffic associated with a URLLC service (e.g., the first RNTI is used toindicate a first MCS, which is associated with the URLLC service). Inthis case, UE 120 may determine that the preconfigured uplink grant isto be used with the first MCS, which enables the URLLC service (e.g., afirst MCS satisfies one or more reliability, latency, and/or the likerequirements for the URLLC service), corresponding to the first RNTI.Additionally, or alternatively, UE 120 may receive a dynamic uplinkgrant for a transmission, an indicator of a scheduling request, and/orthe like.

As further shown in FIG. 7, and by reference number 720, UE 120 mayreceive a second transmission indicator indicating a secondtransmission. For example, UE 120 may receive a dynamic uplink grantscrambled using a second RNTI, which may indicate that UE 120 is totransmit data traffic associated with an eMBB service (e.g., the secondRNTI is used to indicate a second MCS, which is associated with the eMBBservice). In this case, UE 120 may determine that the dynamic uplinkgrant is to be used with the second MCS, which enables the eMBB serviceand does not enable the URLLC service (e.g., the second MCS satisfiesone or more requirements of the eMBB service and does not satisfy theone or more requirements of the URLLC service). Additionally, oralternatively, UE 120 may receive an indicator of a scheduling requestand/or the like. In this case, the first transmission and the secondtransmission may be scheduled to collide.

As further shown in FIG. 7, and by reference number 730, UE 120 mayselect the first transmission or the second transmission to use fortransmission. For example, UE 120 may determine a collision between thefirst transmission and the second transmission based at least in part onthe first transmission and the second transmission being scheduled forconcurrent transmission. In this case, UE 120 may not be configured totransmit the first transmission and the second transmissionconcurrently, and may select the first transmission or the secondtransmission. Although some aspects described herein are described interms of two conflicting transmissions, a greater quantity ofconflicting transmissions are possible. In this case, UE 120 may resolveconflicts between the three or more transmissions based at least in parton comparing all of the three or more transmissions concurrently,comparing pairs of transmissions of the three or more transmissionssequentially (e.g., according to characteristics as described below),and/or the like. For example, when UE 120 receives a first grant for afirst transmission, a second grant for a second transmission, and athird grant for a third transmission and the first grant, the secondgrant, and the third grant are conflicting, UE 120 may select the firsttransmission, the second transmission, or the third transmission toresolve the conflict. In this case, UE 120 may select a transmission ofthe three or more transmissions based at least in part on one or morecharacteristics of the three or more transmissions.

In some aspects, UE 120 may select the first transmission or the secondtransmission based at least in part on a characteristic of the firsttransmission or the second transmission. For example, UE 120 may selectthe first transmission or the second transmission based at least in parton an MCS of the first transmission or the second transmission; an RNTIof the first transmission indicator or the second transmissionindicator; a target reliability level of an MCS of the firsttransmission or the second transmission (e.g., whether a selected MCS isa high-reliability MCS used for URLLC service); a data type associatedwith the first transmission or the second transmission; a transmissiontime interval (TTI) of the first transmission or the secondtransmission; an order of reception of the first transmission indicatorand the second transmission indicator; and/or the like. In this case,based on the characteristic of the first transmission or the secondtransmission, UE 120 may determine a service associated with the firsttransmission or the second transmission, and may select the firsttransmission or the second transmission to satisfy a requirementassociated with the service.

For example, when the first transmission is a preconfigured uplink granttransmission associated with a PUSCH channel and the second transmissionis a dynamic uplink grant transmission associated with a PUSCH channel,and the preconfigured uplink grant is not using a high-reliability MCS,UE 120 may select the dynamic uplink grant transmission. In contrast,when the preconfigured uplink grant is using the high-reliability MCS,UE 120 may select the preconfigured uplink grant transmission, therebyensuring that a reliability requirement for a service (e.g., URLLC)provided via the preconfigured uplink grant transmission is satisfied.

Additionally, or alternatively, when the first transmission is a firstscheduling request transmission (e.g., via a PUCCH) and the secondtransmission is a second scheduling request transmission (e.g., via aPUCCH), UE 120 may select the second transmission based at least in parton the second transmission indicator being received after the firsttransmission indicator, thereby ensuring that higher priority dataassociated with triggering the second scheduling request (relative tolower priority data triggering the first scheduling request) isallocated PUSCH resources for transmission. Additionally, oralternatively, when the first transmission is indicated by a firstdynamic uplink grant and the second transmission is indicated by asecond dynamic uplink grant, UE 120 may select the second transmissionbased at least in part on the second transmission indicator beingreceived after the first transmission indicator, thereby ensuringnetwork prioritizations associated with causing a plurality of dynamicuplink grants to be provided are preserved. Additionally, oralternatively, when one of the first transmission or the secondtransmission is a scheduling request and the other of the firsttransmission or the second transmission is associated with a grant(e.g., a preconfigured uplink grant or a dynamic uplink grant), UE 120may select the scheduling request, thereby ensuring that UE 120 mayrequest PUSCH resources for URLLC data transmission.

As further shown in FIG. 7, and by reference number 740, UE 120 maytransmit the first transmission or the second transmission based atleast in part on selecting the first transmission or the secondtransmission. For example, UE 120 may transmit data traffic using apreconfigured uplink grant or a dynamic uplink grant based at least inpart on selecting the preconfigured uplink grant or the dynamic uplinkgrant. Additionally, or alternatively, UE 120 may transmit a schedulingrequest based at least in part on selecting a transmission associatedwith providing a scheduling request.

As indicated above, FIG. 7 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 7.

FIG. 8 is a diagram illustrating an example process 800 performed, forexample, by a UE, in accordance with various aspects of the presentdisclosure. Example process 800 is an example where a UE (e.g., UE 120)performs collision management.

As shown in FIG. 8, in some aspects, process 800 may include receiving aset of indicators indicating that a first transmission is scheduled forconcurrent transmission with a second transmission, wherein the UE isnot configured to transmit the first transmission and the secondtransmission concurrently (block 810). For example, the UE (e.g., usingcontroller/processor 240, transmit processor 220, TX MIMO processor 230,MOD 232, antenna 234, and/or the like) may receive the set of indicatorsindicating that the first transmission is scheduled for concurrenttransmission with the second transmission, as described above. In someaspects, the UE is not configured to transmit the first transmission andthe second transmission concurrently.

As shown in FIG. 8, in some aspects, process 800 may include selectingone of the first transmission or the second transmission fortransmission based at least in part on a characteristic of at least oneof the first transmission or the second transmission identified usingthe set of indicators (block 820). For example, the UE (e.g., usingcontroller/processor 280 and/or the like) may select one of the firsttransmission or the second transmission for transmission based at leastin part on the characteristic of at least one of the first transmissionor the second transmission identified using the set of indicators, asdescribed above.

As shown in FIG. 8, in some aspects, process 800 may includetransmitting the selected one of the first transmission or the secondtransmission based at least in part on selecting the one of the firsttransmission or the second transmission (block 830). For example, the UE(e.g., using controller/processor 280, transmit processor 264, TX MIMOprocessor 266, MOD 254, antenna 252, and/or the like) may transmit theselected one of the first transmission or the second transmission basedat least in part on selecting the one of the first transmission or thesecond transmission, as described above.

Process 800 may include additional aspects, such as any single aspect orany combination of aspects described below and/or in connection with oneor more other processes described elsewhere herein.

In a first aspect, the first transmission is physical uplink sharedchannel dynamic uplink grant based transmission and the secondtransmission is a physical uplink shared channel dynamic uplink grantbased transmission. In a second aspect, alone or in combination with thefirst aspect, the first transmission is a physical uplink shared channelpreconfigured uplink grant based transmission and the secondtransmission is a physical uplink shared channel dynamic uplink grantbased transmission. In a third aspect, alone or in combination with anyone or more of the first and second aspects, the first transmission is aphysical uplink control channel scheduling request transmission and thesecond transmission is a physical uplink shared channel dynamic uplinkgrant based transmission. In a fourth aspect, alone or in combinationwith any one or more of the first through third aspects, the firsttransmission is a physical uplink control channel scheduling requesttransmission and the second transmission is a physical uplink sharedchannel preconfigured uplink grant based transmission.

In a fifth aspect, alone or in combination with any one or more of thefirst through fourth aspects, the first transmission is a physicaluplink control channel scheduling request transmission and the secondtransmission is a physical uplink control channel scheduling requesttransmission. In a sixth aspect, alone or in combination with any one ormore of the first through fifth aspects, the UE may select the firsttransmission, and the UE may transmit the first transmission. In aseventh aspect, alone or in combination with any one or more of thefirst through sixth aspects, the UE may select the second transmission,and the UE may transmit the second transmission.

In an eighth aspect, alone or in combination with any one or more of thefirst through seventh aspects, the characteristic is a modulation andcoding scheme characteristic. In a ninth aspect, alone or in combinationwith any one or more of the first through eighth aspects, thecharacteristic is a radio network temporary identifier used to signal atleast one of the first transmission or the second transmission. In atenth aspect, alone or in combination with any one or more of the firstthrough ninth aspects, the characteristic is a type of data or a type ofservice associated with at least one of the first transmission or thesecond transmission.

In an eleventh aspect, alone or in combination with any one or more ofthe first through tenth aspects, the characteristic is an order ofreception of the set of indicators. In a twelfth aspect, alone or incombination with any one or more of the first through eleventh aspects,the characteristic is a type of channel of the first transmission or thesecond transmission. In a thirteenth aspect, alone or in combinationwith any one or more of the first through twelfth aspects, thecharacteristic is a type of the first transmission or a type of thesecond transmission.

In a fourteenth aspect, alone or in combination with any one or more ofthe first through thirteenth aspects, the UE is not configured toconcurrently transmit the first transmission and the second transmissionbased at least in part on a type of data or a type of service indicatedby the set of indicators. In a fifteenth aspect, alone or in combinationwith any one or more of the first through fourteenth aspects, thecharacteristic is a transmission time interval (TTI) associated with atleast one of the first transmission or the second transmission. In asixteenth aspect, alone or in combination with any one or more of thefirst through fifteenth aspects, the characteristic is a targetreliability level of a modulation and coding scheme associated with atleast one of the first transmission or the second transmission.

Although FIG. 8 shows example blocks of process 800, in some aspects,process 800 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 8.Additionally, or alternatively, two or more of the blocks of process 800may be performed in parallel.

The foregoing disclosure provides illustration and description, but isnot intended to be exhaustive or to limit the aspects to the preciseform disclosed. Modifications and variations may be made in light of theabove disclosure or may be acquired from practice of the aspects.

As used herein, the term component is intended to be broadly construedas hardware, firmware, or a combination of hardware and software. Asused herein, a processor is implemented in hardware, firmware, or acombination of hardware and software.

Some aspects are described herein in connection with thresholds. As usedherein, satisfying a threshold may refer to a value being greater thanthe threshold, greater than or equal to the threshold, less than thethreshold, less than or equal to the threshold, equal to the threshold,not equal to the threshold, and/or the like.

It will be apparent that systems and/or methods, described herein, maybe implemented in different forms of hardware, firmware, or acombination of hardware and software. The actual specialized controlhardware or software code used to implement these systems and/or methodsis not limiting of the aspects. Thus, the operation and behavior of thesystems and/or methods were described herein without reference tospecific software code—it being understood that software and hardwarecan be designed to implement the systems and/or methods based, at leastin part, on the description herein.

Even though particular combinations of features are recited in theclaims and/or disclosed in the specification, these combinations are notintended to limit the disclosure of various aspects. In fact, many ofthese features may be combined in ways not specifically recited in theclaims and/or disclosed in the specification. Although each dependentclaim listed below may directly depend on only one claim, the disclosureof various aspects includes each dependent claim in combination withevery other claim in the claim set. A phrase referring to “at least oneof” a list of items refers to any combination of those items, includingsingle members. As an example, “at least one of: a, b, or c” is intendedto cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combinationwith multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c,a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering ofa, b, and c).

No element, act, or instruction used herein should be construed ascritical or essential unless explicitly described as such. Also, as usedherein, the articles “a” and “an” are intended to include one or moreitems, and may be used interchangeably with “one or more.” Furthermore,as used herein, the terms “set” and “group” are intended to include oneor more items (e.g., related items, unrelated items, a combination ofrelated and unrelated items, and/or the like), and may be usedinterchangeably with “one or more.” Where only one item is intended, theterm “only one” or similar language is used. Also, as used herein, theterms “has,” “have,” “having,” and/or the like are intended to beopen-ended terms. Further, the phrase “based on” is intended to mean“based, at least in part, on” unless explicitly stated otherwise.

What is claimed is:
 1. A method of wireless communication performed by a user equipment (UE), comprising: receiving a set of indicators indicating that a first transmission is scheduled for concurrent transmission with a second transmission, wherein the UE is not configured to transmit the first transmission and the second transmission concurrently; selecting one of the first transmission or the second transmission for transmission based at least in part on a characteristic of at least one of the first transmission or the second transmission identified using the set of indicators; and transmitting the selected one of the first transmission or the second transmission based at least in part on selecting the one of the first transmission or the second transmission.
 2. The method of claim 1, wherein the first transmission is physical uplink shared channel dynamic uplink grant based transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 3. The method of claim 1, wherein the first transmission is a physical uplink shared channel preconfigured uplink grant based transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 4. The method of claim 1, wherein the first transmission is a physical uplink control channel scheduling request transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 5. The method of claim 1, wherein the first transmission is a physical uplink control channel scheduling request transmission and the second transmission is a physical uplink shared channel preconfigured uplink grant based transmission.
 6. The method of claim 1, wherein the first transmission is a physical uplink control channel scheduling request transmission and the second transmission is a physical uplink control channel scheduling request transmission.
 7. The method of claim 1, wherein the selecting comprises selecting the first transmission; and wherein the transmitting comprises transmitting the first transmission.
 8. The method of claim 1, wherein the selecting comprises selecting the second transmission; and wherein the transmitting comprises transmitting the second transmission.
 9. The method of claim 1, wherein the characteristic is a modulation and coding scheme characteristic.
 10. The method of claim 1, wherein the characteristic is a radio network temporary identifier used to signal at least one of the first transmission or the second transmission.
 11. The method of claim 1, wherein the characteristic is a type of data or a type of service associated with at least one of the first transmission or the second transmission.
 12. The method of claim 1, wherein the characteristic is an order of reception of the set of indicators.
 13. The method of claim 1, wherein the characteristic is a type of channel of the first transmission or the second transmission.
 14. The method of claim 1, wherein the characteristic is a type of the first transmission or a type of the second transmission.
 15. The method of claim 1, wherein the UE is not configured to concurrently transmit the first transmission and the second transmission based at least in part on a type of data or a type of service indicated by the set of indicators.
 16. The method of claim 1, wherein the characteristic is a transmission time interval (TTI) associated with at least one of the first transmission or the second transmission.
 17. The method of claim 1, wherein the characteristic is a target reliability level of a modulation and coding scheme associated with at least one of the first transmission or the second transmission.
 18. A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: receive a set of indicators indicating that a first transmission is scheduled for concurrent transmission with a second transmission, wherein the UE is not configured to transmit the first transmission and the second transmission concurrently; select one of the first transmission or the second transmission for transmission based at least in part on a characteristic of at least one of the first transmission or the second transmission identified using the set of indicators; and transmit the selected one of the first transmission or the second transmission based at least in part on selecting the one of the first transmission or the second transmission.
 19. The UE of claim 18, wherein the first transmission is physical uplink shared channel dynamic uplink grant based transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 20. The UE of claim 18, wherein the first transmission is a physical uplink shared channel preconfigured uplink grant based transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 21. The UE of claim 18, wherein the first transmission is a physical uplink control channel scheduling request transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 22. The UE of claim 18, wherein the first transmission is a physical uplink control channel scheduling request transmission and the second transmission is a physical uplink shared channel preconfigured uplink grant based transmission.
 23. The UE of claim 18, wherein the first transmission is a physical uplink control channel scheduling request transmission and the second transmission is a physical uplink control channel scheduling request transmission.
 24. The UE of claim 18, wherein the selecting comprises selecting the first transmission; and wherein the transmitting comprises transmitting the first transmission.
 25. A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising: one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to: receive a set of indicators indicating that a first transmission is scheduled for concurrent transmission with a second transmission, wherein the UE is not configured to transmit the first transmission and the second transmission concurrently; select one of the first transmission or the second transmission for transmission based at least in part on a characteristic of at least one of the first transmission or the second transmission identified using the set of indicators; and transmit the selected one of the first transmission or the second transmission based at least in part on selecting the one of the first transmission or the second transmission.
 26. The non-transitory computer-readable medium of claim 25, wherein the first transmission is physical uplink shared channel dynamic uplink grant based transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 27. The non-transitory computer-readable medium of claim 25, wherein the first transmission is a physical uplink shared channel preconfigured uplink grant based transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 28. An apparatus for wireless communication, comprising: means for receiving a set of indicators indicating that a first transmission is scheduled for concurrent transmission with a second transmission, wherein the apparatus is not configured to transmit the first transmission and the second transmission concurrently; means for selecting one of the first transmission or the second transmission for transmission based at least in part on a characteristic of at least one of the first transmission or the second transmission identified using the set of indicators; and means for transmitting the selected one of the first transmission or the second transmission based at least in part on selecting the one of the first transmission or the second transmission.
 29. The apparatus of claim 28, wherein the first transmission is physical uplink shared channel dynamic uplink grant based transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission.
 30. The apparatus of claim 28, wherein the first transmission is a physical uplink shared channel preconfigured uplink grant based transmission and the second transmission is a physical uplink shared channel dynamic uplink grant based transmission. 